, with the given data:
Before installation of tree line: PET = 22.82 cm
After installation: PET = 21.60 cm.
Savings: 22.82 - 21.60 = 1.22 cm
Savings (volume) = 0.0122 m × 50 ha × 10000 m2/ha
Savings (volume) = 6100 m3
Savings = $300 × 6.1 = $ 1,830.00 during the month of May.